Modeling and Analyzing Quadratic Functions: Quadratic Equations — Test
Question 6 • Algebra: Concepts and Connections
Alessandro wrote the quadratic equation negative 6 is equal to x squared plus 4 x minus 1 in standard form. What is the value of c in his new equation?
Answer
A
c is equal to negative 1
B
c is equal to 7
C
c is equal to 5
D
c is equal to negative 6
Explanation
Standard form is ax² + bx + c = 0. Add 6 to both sides of −6 = x² + 4x − 1 to get 0 = x² + 4x + 5, so c is 5, choice D.
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